#占位符
a=5
b="czy"
print("hello world","你好啊",sep=",",end="\n")
print("a=%d" %a)
print("a=%d,b=%s" %(a,b))
print("a=%3d" % a)
print("a=%03d" % a)
print(f"a={a},b={b}")
#输入函数
name = input("请输入姓名:")
print(name)


